Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation
文献类型：期刊论文
| 作者 | Chen, D.; Cui, P. L.; Liu, H.; Yang, J. |
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2015 |
| 期号 | 0页码:461-467 |
| 关键词 | Silver sulfide Hollow palladium nanoparticle Nanocomposites Galvanic replacement reaction Formic acid oxidation Electronic coupling effect OXYGEN REDUCTION FUEL-CELLS ELECTROCHEMICAL OXIDATION SINGLE-CRYSTAL NOBLE-METALS AG ALLOYS ELECTROOXIDATION NANOCRYSTALS PALLADIUM NANOSPHERES |
| 其他题名 | Electrochim. Acta |
| 中文摘要 | Nanocomposites consisting semiconductor and noble metal domains are of great interest for their synergistic effect-based enhanced properties in a given application. Herein, we demonstrate a facile approach for the synthesis of heterogeneous nanocomposites consisting of silver sulfide (Ag2S) and hollow structured Pd nanoparticles (hPd). It begins with the preparation of core-shell nanoparticles with an Ag core and an alloy Ag/Pd shell in an organic solvent via galvanic replacement reaction (GRR) between Ag seed particles pre-synthesized and Pd2+ ion precursors. The Ag component is then removed from the core and shell regions of core-shell Ag-Ag/Pd nanoparticles, and converted into Ag2S by elemental sulfur (S). The Ag2S forms the semiconductor domain in the nanocomposite and shares the solid-state interface with the resultant hollow structured Pd nanoparticle. As demonstrated, the Ag2S-hPd nanocomposites exhibit superior catalytic activity and durability for formic acid oxidation, compared to the pure Pd nanoparticles prepared by oleylamine reduction of Pd ion precursors and commercial Pd/C catalyst, due to the electronic coupling between semiconductor and noble metal domains in the nanocomposites. In addition, the structural transformation from core-shell to heterogeneous nanocomposites may provide new opportunities to design and fabricate hybrid nanostructures with interesting physicochemical properties. (C) 2014 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| 公开日期 | 2015-04-01 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11706]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 推荐引用方式 GB/T 7714 | Chen, D.,Cui, P. L.,Liu, H.,et al. Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation[J]. Electrochimica Acta,2015(0):461-467. |
| APA | Chen, D.,Cui, P. L.,Liu, H.,&Yang, J..(2015).Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation.Electrochimica Acta(0),461-467. |
| MLA | Chen, D.,et al."Heterogeneous nanocomposites composed of silver sulfide and hollow structured Pd nanoparticles with enhanced catalytic activity toward formic acid oxidation".Electrochimica Acta .0(2015):461-467. |
入库方式： OAI收割
来源：过程工程研究所
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